基于EIO光伏并网逆变器非奇异快速终端滑模控制设计
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摘要
为了减小外界干扰和系统参数的不确定性等因素对光伏并网逆变系统的影响,文章提出了基于非奇异快速终端滑模控制的光伏并网逆变器控制策略。设计了基于等价输入观测器的光伏并网逆变器干扰项补偿器,推导了在参数不确定和外界干扰情况下的逆变器的反馈控制律。仿真结果表明,采用扰动观测器与非奇异快速终端滑模控制相结合的策略,增强了系统的鲁棒性,提高了跟踪精确度,系统具有良好的动态性能。
In order to overcome the problems of photovoltaic grid-connected inverter system disturbed by external disturbance and system parameter uncertainties, the inverter state equation is established with the consideration of the disturbances. A control strategy of nonsingular fast terminal sliding mode control of photovoltaic grid connected inverter is proposed. The compensator of photovoltaic grid connected inverter based equivalent input disturbance observer is designed and the feedback control law under the external disturbance with uncertain parameters is derived. The simulation results show that the sheme combining disturbance observer and nonsingular fast terminal sliding mode control enhance the robustness and improve the tracking accuracy, the system has good dynamic performance.
In order to overcome the problems of photovoltaic grid-connected inverter system disturbed by external disturbance and system parameter uncertainties, the inverter state equation is established with the consideration of the disturbances. A control strategy of nonsingular fast terminal sliding mode control of photovoltaic grid connected inverter is proposed. The compensator of photovoltaic grid connected inverter based equivalent input disturbance observer is designed and the feedback control law under the external disturbance with uncertain parameters is derived. The simulation results show that the sheme combining disturbance observer and nonsingular fast terminal sliding mode control enhance the robustness and improve the tracking accuracy, the system has good dynamic performance.
引文
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[14]孙黎霞,朱鹏飞,陈耀,等.垂直轴永磁同步风力发电机侧整流器的终端滑模控制[J].可再生能源,2016,34(5):68-72.
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[2]杨代利,张宏立,刘璨,等.基于全鲁棒滑模控制双馈风力发电系统空载并网控制研究[J].可再生能源,2013,31(12):75-80.
[3]张久亮,郭前岗,周西峰.光伏并网逆变器准比例谐振控制仿真研究[J].电测与仪表,2013,50(2):68-72.
[4]张立彬,徐红伟,胥芳,等.永磁直驱式同步风力发电系统滑模自寻最优控制[J].可再生能源,2013,31(7):55-60.
[5]黄天富,石新春,魏德冰,等.基于电流无差拍控制的三相光伏并网逆变器的研究[J].电力系统保护与控制,2012,40(1):36-41.
[6]杨勇,赵方平,阮毅,等.三相并网逆变器模型电流预测控制技术[J].电工技术学报,2011,26(6):153-159.
[7]杨勇,阮毅,叶斌英,等.三相并网逆变器无差拍电流预测控制方法[J].中国电机工程学报,2009,20(33):40-46.
[8]刘吉宏,陈小荣,肖莹.永磁同步风电机组神经网络滑模多目标优化控制[J].可再生能源,2015,33(1):76-81.
[9]王晓涛,曾成碧,刘晨曦.基于模糊控制的并网逆变器的研究[J].电力系统保护与控制,2011,39(9):97-102.
[10]姚鑫,罗晓曙,廖志贤,等.光伏并网逆变器模糊准PR控制仿真研究[J].电测与仪表,2014,51(19):86-90.
[11]李梦男,钱平,叶银忠.基于动态滑模控制的并网逆变器控制策略[J].电测与仪表,2015,52(21):51-55.
[12]黄赋光,谢运祥,杨苹.新型Boost逆变器的积分滑模控制[J].电力电子技术,2004,38(1):7-9.
[13]于彬,沈锦飞,张兴进.基于优化滑模控制的小型风电并网逆变器研究[J].电力电子技术,2012,46(5):33-35.
[14]孙黎霞,朱鹏飞,陈耀,等.垂直轴永磁同步风力发电机侧整流器的终端滑模控制[J].可再生能源,2016,34(5):68-72.
[15]霍群海,孔力,韦统振.2种改进的滑模并网逆变器控制策略[J].电力自动化设备,2009,29(4):32-36.
[16]常雪剑,彭博,刘凌,等.新型非奇异终端滑模观测器的永磁同步电机无传感器控制[J].西安交通大学学报,2016,50(1):85-92.